ArcOS v1.1 – A Natural-Language Cognitive Operating System (github.com)

ArcOS v1.1, by Masaya Ochiai, is presented as a “Cognitive Clone OS”: an operating system that encodes and executes an individual’s cognitive structure—abstraction habits, decision-making patterns, value hierarchy and preferred reasoning depth—using natural language as the execution layer. Rather than a persona, ArcOS is an OS-level reasoning style that enforces deterministic, layered reasoning (surface → structure → root cause → meta-level) so that identical conditions produce identical reasoning trajectories and conclusions. The project (CC BY 4.0) ships with a Lite chat activation that reproduces the thinking-structure layer and links to full whitepapers (DOI available) for the complete specification. ArcOS is positioned alongside PolyAgora v2 and ECHOOS v1 as part of a natural-language OS ecosystem. For AI/ML practitioners, ArcOS is significant because it reframes model behavior control as an explicit, reusable “execution” of human cognitive patterns in natural language, promising stronger alignment, reproducibility, and long-context consistency for agents and assistants. Key technical implications include methods to extract and represent cognitive structures as language-code, layered deterministic reasoning pipelines, and drift suppression across extended interactions. Risks and research questions remain: how to robustly extract unbiased cognitive templates, how deterministic reasoning interacts with stochastic LLM outputs, evaluation metrics for fidelity and safety, and deployment safeguards. The CC BY license and published whitepapers invite community validation and extension.